AC-DC converter



FIG. 1 is a perspective view of an AC-DC converter showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is front elevational view thereof. 

The ornamental design for an AC-DC converter, as shown and described. 